Network device with dynamic power management

Abstract

Devices, systems, methods, and processes for dynamic power management in network devices are described herein. Power consumption in network devices may fluctuate due to varying load conditions, leading to inefficiency if all power supply units (PSUs) in these network devices remain active all the time. To address this, a network device is provided with a power management logic that dynamically tunes a count of active PSUs in the network device based on a load demand handled by various PSUs in the network device. The power management logic may receive, from the PSUs, one or more load status signals indicating the load demand handled by the PSUs. Based on the one or more load status signals, the power management logic may determine whether to increase or decrease the count of active PSUs. Dynamically adjusting the count of active PSUs may enhance energy efficiency, reduce costs, and promote sustainability.

What is claimed is: 
     
         1 . A device, comprising:
 a processor;   a plurality of power supply units (PSUs), each operable in one of an active mode or a standby mode;   a memory communicatively coupled to the processor; and   a power management logic that is configured to:
 receive one or more load status signals from the plurality of PSUs, wherein the one or more load status signals are configured to indicate a load demand; and 
 tune a count of active mode PSUs among the plurality of PSUs based on the one or more load status signals. 
   
     
     
         2 . The device of  claim 1 , wherein tuning the count of active mode PSUs include one of:
 increasing the count of active mode PSUs, or   decreasing the count of active mode PSUs.   
     
     
         3 . The device of  claim 2 , wherein the count of active mode PSUs is increased based on the one or more load status signals indicating that the load demand is greater than a peak efficiency load threshold. 
     
     
         4 . The device of  claim 2 , wherein the count of active mode PSUs is decreased based on the one or more load status signals indicating that the load demand is less than a peak efficiency load threshold. 
     
     
         5 . The device of  claim 1 , wherein the load demand corresponds to a real-time load demand or a near-real-time load demand. 
     
     
         6 . The device of  claim 5 , wherein the one or more load status signals include at least one of a high-load signal or a low-load signal. 
     
     
         7 . The device of  claim 6 , wherein the high-load signal is configured to indicate that the real-time load demand or the near-real-time load demand is greater than a peak efficiency load threshold. 
     
     
         8 . The device of  claim 6 , wherein the low-load signal is configured to indicate that the real-time load demand or the near-real-time load demand is less than a peak efficiency load threshold. 
     
     
         9 . The device of  claim 6 , wherein to tune the count of active mode PSUs, the power management logic is further configured to:
 detect that the high-load signal has transitioned from a first state to a second state; and   trigger, in response to the high-load signal transitioning from the first state to the second state, at least one standby PSU among the plurality of PSUs to operate in the active mode.   
     
     
         10 . The device of  claim 6 , wherein to tune the count of active mode PSUs, the power management logic is further configured to:
 detect that the low-load signal has transitioned from a first state to a second state; and   trigger, in response to the low-load signal transitioning from the first state to the second state, at least one active PSU among the plurality of PSUs to operate in the standby mode.   
     
     
         11 . The device of  claim 1 , wherein the power management logic is further configured to:
 determine mode oscillation information associated with the plurality of PSUs; and   set one or more peak efficiency load thresholds based on the mode oscillation information.   
     
     
         12 . The device of  claim 11 , wherein the mode oscillation information indicates a number of times a PSU among the plurality of PSUs has oscillated between the active mode and the standby mode within a set time period. 
     
     
         13 . The device of  claim 11 , wherein the power management logic is further configured to provide the one or more peak efficiency load thresholds to the plurality of PSUs. 
     
     
         14 . The device of  claim 11 , wherein the one or more peak efficiency load thresholds are configured to define a peak efficiency load threshold range. 
     
     
         15 . The device of  claim 11 , wherein the plurality of PSUs is associated with unique one or more peak efficiency load thresholds. 
     
     
         16 . A device, comprising:
 a processor; and   a memory communicatively coupled to the processor, wherein the memory comprises a power management logic that is configured to:
 generate one or more load status signals based on a load demand and one or more peak efficiency load thresholds associated with the device; 
 receive a mode trigger signal in response to the generation of the one or more load status signals; and 
 operate in one of an active mode or a standby mode based on the mode trigger signal. 
   
     
     
         17 . The device of  claim 16 , wherein the power management logic is further configured to receive the one or more peak efficiency load thresholds. 
     
     
         18 . The device of  claim 16 , wherein the one or more peak efficiency load thresholds are dynamically programmable. 
     
     
         19 . A method, comprising:
 receiving one or more load status signals from a plurality of power supply units (PSUs) in a network device, wherein the one or more load status signals are configured to indicate a load demand; and   tuning a count of active mode PSUs among the plurality of PSUs based on the one or more load status signals.   
     
     
         20 . The method of  claim 19 , wherein tuning the count of active mode PSUs includes one of:
 increasing the count of active mode PSUs based on the one or more load status signals indicating that the load demand is greater than a first peak efficiency load threshold, or   decreasing the count of active mode PSUs based on the one or more load status signals indicating that the load demand is less than a second peak efficiency load threshold.